Radiator



Patented Oct. 13, 1925.

'UNITED STATES PATENT OFFICE.

.ARTHUR 1B. MDIN E, OF RACINE, WISCONSIN.

RADIATOR.

. Original application led May 10, 1920, Serial No. 380,215. Divided andth 1923. Serial No. 630,616.

To all whom t may concern:

Be it known that I, ARTHUR B. MODINE, a citizen of the United States,residing at Racine, in the county of Racine and State of lVisconsin,have invented certain new and useful Improvements in Radiators, of which4the following4 is a description.

This application is a division ofmy application for improvements inradiators, Serial No. 380,215, filed May 10, 1920, and relatesparticularly to a type of radiator to be used in connection with coolingsystems for cooling the fluid used in the system or dissipating theheat-therefrom.

The invention has among its objects the production of a radiatorconstruction of the kinddescribed that is simple, efficient, attractive,durable, convenient and satisfactory for use wherever found applicable.It

In the drawings, wherein like reference.

characters indicate like .or corresponding parts,

Fig. 1 is a front elevation of my construction as embodied in anautomobile radiator;

Fig. 2 is a sectional View taken substan-A tially on line 2r-201? Fig.1; and

Fig. 3 is a perspective view of a portion of the same.

Referring to the drawings, wherein I have Y illustrated the preferredembodiment of my invention, there is shown a substantially completeradiator in Fig. 1, the construction illustrated and described beingparticularly intended for automobile use. It is to beunderstood,h0wever, that although this type of radiator is shown, theconstruction may I be employed lwherever found applicable in Vmi thetransfer of heat or control of temperatures.

A s most clearly shown in Figs. 2 and 3, 1

is application led April 7,

air or the like about thetubes, assistinvr in dissipating the heat andspacing the tu es. It is not deemed necessary that the entire radiatorbe described, other than to say that 8 represents a plate over the tankparts, which are not shown in detail, 9. the -liller tube, and 10 thebrackets or extensions on the radiator frame for supporting and'securing the radiator in place.

The plates 2 are formed with openings therethrough 'to receive the tubes1, and said plates closely fit the tubes and are secured thereto bysoldering or the like so as to elliciently conduct or radiate the 'heattherefor receiving the tubes are formed in a plurality or series, eachseries of a ertures being spaced apart in alignment rom side to side ofthe plate. The plates may connect the several tubes or not as may bedesired,

but in case they do not connect the adjacent tubes they would co'nsistsubstantially of thereof over as at 7 so as to strengthen or stifensaidpart and also to make it more ornamental and give it a pleasing appearance. The rear end of the plate may also be extended similarly as at 4,if so desired. The plates may be roughened or corruffate'd, as indicatedat 7, between the front and back edges thereof. This may be done eitherby slightly corrugating the same, or by both knurling and corrugating,or knurlmg and on either or both sides.` This construction causes aturbulent condition or state of the air passing over the plates, and issubstantially a secondary-series of corrugations.

I have endeavored to show by arrows how the air as it .passes betweenthe plates 1s deflected back and forth. Each of the plates `from. Itwill be noted that the apertures has a plurality of substantiallyparallel series of corrugations extending thereacross from side to side,as shown, each series of corrugations being spaced apart from theadjacent series a distance equal to the spacing apart of the adjacentseries of tube-receiving a apertures. j The corrugations 5 are formedzig-zag,that 1s, they are formed with -a series of alternately directedturns or angles and `in. the form shown are V-shaped like chevrons.'`The adjacent oppositely directed ends of adjacent Vshaped corrugationsof a series terminate at or lead from the opposite sides of thetube-receiving apertures, these apertures being located at the rear endsof the corrugations; or, in otherV words, the corrugations are soarranged that they are offset tothe front of the line of apertures andintersect the tube-receiving apertures along other half of the V to theadjacent 'tube in the line. These corrugations have a tendency todeflect the assing adir onto, around and about the 'tu s. I also preferto roughen the plates in the areas extending radiator, the tendencylongitudinally of the plates from side to side and arrangedintermediate, the adjacent series of V-shaped corrugations to furtherincrease the turbulence of the air passing over the plates.

The air as it passes between the. lates and around and about the tubesis t oroughly agitated and as it strikes the faces ofthe portions 5'isdeflected back and forth between the plates, traveling along the groovesor ridges of the V-shaped corrugations transversely of the tubes andbetween them and also longitudinally thereof.` There is no tendency foran air film to form at the plates and the air midway between the platesto pass through the radiator at increased velocity without serving itspurpose, but, on the contrary,-owing to the turbulence or agitation inthe air, the air is all utilized for cooling or takin up the heat, sothat the heatis dissipated from the tubes to a greater extent. v

The rate of heat transfer is dependent upon the temperature differencebetween the heated surface and the A circulating air. When using smoothradiating surfaces in a air to lag behind an serve to insulate thesesurfaces from the main body of circulating air and it is the purpose ofthe agitation to destroy this film and allow the surfaces to comeintocontact with the air at a lower Vtending transversely is for a filmof heated h temperature. The result is that the air in contact with theplates and tubes is cooler than it ordinarily would be, -because everyparticle of air is used for cooling purposes. The plates are inclined,as shown, so that substantially all of the air passing between oreignvcations may be made in the same without,y

departing from the spirit of my invention;

,hence I do not'wish to be understood as limiting myself to the exactform, construcarrangement and combination of parts tion, herein shownand described or uses men" tioned.

What I claim as new'and desire to secure Iby Letters Patent is:

l. A radiator comprising a plurality of tubes, and a plurality of spaced.plates exthereto saidI plates formed in a series of curves between thefront and rear edges thereof and provided with' corrugations on saidcurves, these corrugations extending from side to side of the platesbetween said tubes to cause an agitation of the air radiator. f

2. A radiator comprising a plurality of spaced plates having a series ofundulations thereon from front to rear thereof and having a erturestherethrough, and a plurality of tu extending through said aperturestransversely of the plates, said plates havlng corrugations thereonleading from one aperture to the other to agitate the air flowingbetween the plates.

3. A. radiator comprising a plurality of spaced plates formed intoa'series of undulations from front'lto rear thereof and having aplurality of series of 'spaced a ertures therethrough, each series havint eir cen/ters arranged in a line from side ivo-side of the plates, anda plurality of tubes extending through said apertures transversely ofsaid plates, said plates each having a series of corrugations thereonextending along said line of centers from`one aper- 'secondary seriesfrom side to side of the plate between the rst-mentioned corture to theother, and a of corrugations extendin rugations.

4. A radiator comprising a plurality of s aced plates having a series ofundulations t ereon from front to rear thereof and aving aperturestherethrough and a plurality of tubes extending through said aperturestransversel of the plates, said plates having corrugations thereonleading from one aperture to the other to agitate the air owing betweenthev plates, said corrugapockets passing, through the tions arranged atan obliqueangle to the front and -rear edges of the plates, said platesalso havin an auxiliary roughening thereon interme iate said corrugatedportions.

5. A radiator comprising a plurality of spaced plates having aperturestherethrough, and a plurality of tubes extending through said aperturestransversely of the lates, said plates having cppositely direct ycorrugations -between' a jacent apertures so that saidv corrugationsmeet at points not in line With the`line of centers of adjacentapertures.

6. A radiator comprising, a plurality of spaced plates having aperturestherethrough, and tubes extending through saidA apertures transverselyof the plates, said plates having zig-zag corrugatons thereon extendingfrom side to side and intersecting said apertures.

7. A radiator comprising a plurality of spaced plates formed into aseries of undulating grooves and crests from front to rearthereof andprovided with apertures through said crests, and a series of tubesextendingy through said apertures transversely of said'plates, saidplates having zig-zag corrugations extending from one side to the otherthereof and interesecting said apertures at regular intervals at therear ends of said corrugations.

8. A radiator comprising a plurality of spaced plates having a pluralityof series of V-shaped corrugations extending thereacross from side toside thereof, and provided with a plurality of apertures therethrough atregular intervals at the rear ends of ad]acent portions of the V-shapedcorrugations so that said apertures extend in a line from side to sideof the plate,' said plates also provided `With a series of roughenedportions intermediate a pair ofadjacent V-shaped series of corrugationsand extending substantially parallel thereto, and a plurality of tubesextending through said apertures transversely of said plates. 4Intestimony whereof, I have hereunto signed my name.

ARTHUR B. MODINE.

